#define USE_SHARED_PTR 1

#include <boost/mpl/vector/vector50.hpp>
#include <boost/variant/variant.hpp>
#include <boost/variant/apply_visitor.hpp>
#include <boost/variant/static_visitor.hpp>
#include <boost/shared_ptr.hpp>

#include <boost/preprocessor/iteration/local.hpp>
#include <boost/preprocessor/cat.hpp>
#include <boost/preprocessor/enum.hpp>

#define BOOST_PP_LOCAL_MACRO(n) class BOOST_PP_CAT(C, n) { public: int i; };
#define BOOST_PP_LOCAL_LIMITS (0, 49)
#include BOOST_PP_LOCAL_ITERATE()

#define SHARED_PTR_C(z, n, data) boost::shared_ptr<BOOST_PP_CAT(C, n)> /**/
#define C(z, n, data) BOOST_PP_CAT(C, n) /**/
#if USE_SHARED_PTR
typedef boost::mpl::vector49<BOOST_PP_ENUM(49, SHARED_PTR_C, ~)> Mplv_t;
#else
typedef boost::mpl::vector49<BOOST_PP_ENUM(49, C, ~)> Mplv_t;
#endif
typedef boost::make_variant_over<Mplv_t>::type v_t;

void foo(const v_t& v)
{
//C: Copy variant using assignment operator
  v_t v2;
  v2 = v;
} 

int main()
{
  v_t v;
  foo(v);
  return 0;
}